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crtc flush timeout when loading SGX driver

Hello expert

I'm working on Jacinto6 with multi display(1hdmi+3lvds)

Recently, we upgrade GLSDK to 7.04.

After update, a strange message has been printing when load SGX driver like below.

I tried to test display output using "kmscube -a". It looks working fine(working as 60fps)

Could you explain about this situation and tell us how it fix, how serious?

root@:~# pvrsrvinit
[   82.104873] omapdrm omapdrm.0: omap_crtc_flush() timeout
[   82.304868] omapdrm omapdrm.0: omap_crtc_flush() timeout
[   82.504866] omapdrm omapdrm.0: omap_crtc_flush() timeout
[   82.704866] omapdrm omapdrm.0: omap_crtc_flush() timeout
[   82.914867] omapdrm omapdrm.0: omap_crtc_flush() timeout
[   83.114865] omapdrm omapdrm.0: omap_crtc_flush() timeout
root@:~# lsmod
Module                  Size  Used by
omapdrm_pvr           316271  0
spi_slave_brain         6148  0

Thank you